does not update while pressing update on my articles while editing

My problem is that after i edit the article it reverts back to its old self

these are my pictures representing the steps I took while trying to edit:

before editing :

after editing:

after pressing the update button:

my code:

articles_controller:

class ArticlesController < ApplicationController

  def index
    @articles = Article.all
  end 

  def new
    @article = Article.new 
  end

  def edit 
    @article = Article.find(params[:id])
  end 

  def update
    @article = Article.find(params[:id])
    if @article.save 
      flash[:notice] = "article was updated"
      redirect_to(@article)
    else
      render 'edit'
    end 
  end 

  def create
    @article = Article.new(article_params)
    if @article.update(article_params)
      flash[:notice] = "Article was submitted succsefully"
      redirect_to (@article)
    else
      render 'new'
    end 
  end

  def show
    @article = Article.find(params[:id])
  end 

  private 

  def article_params 
    params.require(:article).permit(:title, :description)
  end

end 

ask me for more files i f it helps.

P.S. Please don't downvote this question